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Recent research in provably secure neural linguistic steganography has overlooked a crucial aspect: the sender must detokenize stegotexts to avoid raising suspicion from the eavesdropper. The segmentation ambiguity problem, which arises…

Cryptography and Security · Computer Science 2024-12-17 Yuang Qi , Kejiang Chen , Kai Zeng , Weiming Zhang , Nenghai Yu

Whereas traditional cryptography encrypts a secret message into an unintelligible form, steganography conceals that communication is taking place by encoding a secret message into a cover signal. Language is a particularly pragmatic cover…

Computation and Language · Computer Science 2019-09-05 Zachary M. Ziegler , Yuntian Deng , Alexander M. Rush

Linguistic steganography studies how to hide secret messages in natural language cover texts. Traditional methods aim to transform a secret message into an innocent text via lexical substitution or syntactical modification. Recently,…

Computation and Language · Computer Science 2020-10-05 Jiaming Shen , Heng Ji , Jiawei Han

Word segmentation, the problem of finding word boundaries in speech, is of interest for a range of tasks. Previous papers have suggested that for sequence-to-sequence models trained on tasks such as speech translation or speech recognition,…

Computation and Language · Computer Science 2021-09-22 Ramon Sanabria , Hao Tang , Sharon Goldwater

Word segmentation is a low-level NLP task that is non-trivial for a considerable number of languages. In this paper, we present a sequence tagging framework and apply it to word segmentation for a wide range of languages with different…

Computation and Language · Computer Science 2018-07-10 Yan Shao , Christian Hardmeier , Joakim Nivre

Ambiguity is an critical component of language that allows for more effective communication between speakers, but is often ignored in NLP. Recent work suggests that NLP systems may struggle to grasp certain elements of human language…

Computation and Language · Computer Science 2024-03-22 Margaret Y. Li , Alisa Liu , Zhaofeng Wu , Noah A. Smith

Subword units are an effective way to alleviate the open vocabulary problems in neural machine translation (NMT). While sentences are usually converted into unique subword sequences, subword segmentation is potentially ambiguous and…

Computation and Language · Computer Science 2018-05-01 Taku Kudo

In the era of Large Language Models (LLMs), generative linguistic steganography has become a prevalent technique for hiding information within model-generated texts. However, traditional steganography methods struggle to effectively align…

Cryptography and Security · Computer Science 2024-12-17 Minhao Bai , Jinshuai Yang , Kaiyi Pang , Yongfeng Huang , Yue Gao

Temporary syntactic ambiguities arise when the beginning of a sentence is compatible with multiple syntactic analyses. We inspect to which extent neural language models (LMs) exhibit uncertainty over such analyses when processing…

Computation and Language · Computer Science 2021-09-17 Laura Aina , Tal Linzen

Steganography is the practice of concealing a message within some other carrier or cover message. It is used to allow the sending of hidden information through communication channels where third parties would only be aware of the explicit…

Cryptography and Security · Computer Science 2022-03-24 João Figueira

Ambiguity is ubiquitous in natural language. Resolving ambiguous meanings is especially important in information retrieval tasks. While word embeddings carry semantic information, they fail to handle ambiguity well. Transformer models have…

Computation and Language · Computer Science 2023-07-26 Matthias Thurnbauer , Johannes Reisinger , Christoph Goller , Andreas Fischer

Lexical ambiguity presents a profound and enduring challenge to the language sciences. Researchers for decades have grappled with the problem of how language users learn, represent and process words with more than one meaning. Our work…

Computation and Language · Computer Science 2023-04-27 Benedetta Cevoli , Chris Watkins , Yang Gao , Kathleen Rastle

Steganography is the art of hiding a secret message inside a publicly visible carrier message. Ideally, it is done without modifying the carrier, and with minimal loss of information in the secret message. Recently, various deep learning…

Multimedia · Computer Science 2020-03-31 Shivam Agarwal , Siddarth Venkatraman

Informally, steganography is the process of exchanging a secret message between two communicating entities so that an eavesdropper may not know that a message has been sent. After a review of some steganographic systems, we found that these…

Cryptography and Security · Computer Science 2015-06-16 Fabrice P. Tachago , Stephane G. R. Ekodeck , Rene Ndoundam

Steganography is the science of hiding a secret message within an ordinary public message, which is referred to as Carrier. Traditionally, digital signal processing techniques, such as least significant bit encoding, were used for hiding…

Sound · Computer Science 2020-07-28 Felix Kreuk , Yossi Adi , Bhiksha Raj , Rita Singh , Joseph Keshet

This paper studies the problem of language-guided reflection separation, which aims at addressing the ill-posed reflection separation problem by introducing language descriptions to provide layer content. We propose a unified framework to…

Computer Vision and Pattern Recognition · Computer Science 2024-06-05 Haofeng Zhong , Yuchen Hong , Shuchen Weng , Jinxiu Liang , Boxin Shi

Probabilistic image segmentation encodes varying prediction confidence and inherent ambiguity in the segmentation problem. While different probabilistic segmentation models are designed to capture different aspects of segmentation…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Steffen Czolbe , Kasra Arnavaz , Oswin Krause , Aasa Feragen

Unsupervised neural grammar induction aims to learn interpretable hierarchical structures from language data. However, existing models face an expressiveness bottleneck, often resulting in unnecessarily large yet underperforming grammars.…

Computation and Language · Computer Science 2025-09-26 Jinwook Park , Kangil Kim

Neural machine translation (NMT) has achieved new state-of-the-art performance in translating ambiguous words. However, it is still unclear which component dominates the process of disambiguation. In this paper, we explore the ability of…

Computation and Language · Computer Science 2020-05-07 Gongbo Tang , Rico Sennrich , Joakim Nivre

Many real-world vision problems suffer from inherent ambiguities. In clinical applications for example, it might not be clear from a CT scan alone which particular region is cancer tissue. Therefore a group of graders typically produces a…

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